Hydrodynamic parameters of floods and related bank erosion events indicated from tree rings and 2D hydrodynamic model for a small ungauged catchment (Sudeten Mts., Poland)

Small mountain catchments usually lack hydrological monitoring and gauges. Therefore, in such areas, data on past flood and bank erosion are often missing, which makes assessing flood and erosion hazards very limited. We attempt to fill in this gap by dating individual flood and erosion events from...

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Autores principales:	Ireneusz Malik, Małgorzata Wistuba, Damian Absalon, Michał Habel, Sergey Chalov, Ruide Yu
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Flood indication bank erosion Palaeohydrology Tree rings 2D modelling Ecology QH540-549.5
Acceso en línea:	https://doaj.org/article/bfa40ce860dc4d20bdf9730a8292359a
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spelling	oai:doaj.org-article:bfa40ce860dc4d20bdf9730a8292359a2021-12-01T04:58:07ZHydrodynamic parameters of floods and related bank erosion events indicated from tree rings and 2D hydrodynamic model for a small ungauged catchment (Sudeten Mts., Poland)1470-160X10.1016/j.ecolind.2021.108021https://doaj.org/article/bfa40ce860dc4d20bdf9730a8292359a2021-10-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S1470160X21006865https://doaj.org/toc/1470-160XSmall mountain catchments usually lack hydrological monitoring and gauges. Therefore, in such areas, data on past flood and bank erosion are often missing, which makes assessing flood and erosion hazards very limited. We attempt to fill in this gap by dating individual flood and erosion events from growth disturbances produced by trees after their stems are tilted, and their roots are exposed and wounded by transported material. We aimed to develop a conceptual approach to integrate dendrochronology and 2D modelling for indicating and assessing past events of floods and bank erosion on a small mountain river Łomniczka, Sudeten mountains, Poland. We dated growth disturbances resulting from tilting of stems of spruce trees which grow on eroded riverbanks, i.e. tree-ring eccentricity and compression wood. We also dated disturbances resulting from the exposure of roots from under the soil cover, i.e. sudden decreases of cell lumen, and root injuries by debris transported by floods, i.e. scars and traumatic resin ducts. Dendrochronology allow to indicate the occurrence of 28 floods since the 1930s, including 11 floods when bank erosion was also recorded at study sites. The approach enables to identify rates of bank erosion during specific floods which ranged at study sites from 20 to 120 cm. The largest discharge was determined for the 1997 flood (106,7 m3 s−1), and the highest flow velocities were obtained for the 1930 floods (4.59 m/s). Results show that the highest shear stress occurred during the floods in 1943 and 1977 (510,3N/m2) and in 1997 flood (469.1 N/m2). We conclude that dendrochronology combined with 2D modelling allowed us to indicate past floods and bank erosion, and to prepare reliable inventories for analyses of flood and erosion hazard. The approach proposed in this paper can also be used as a tool for flood management, spatial management and planning.Ireneusz MalikMałgorzata WistubaDamian AbsalonMichał HabelSergey ChalovRuide YuElsevierarticleFlood indication bank erosionPalaeohydrologyTree rings2D modellingEcologyQH540-549.5ENEcological Indicators, Vol 129, Iss , Pp 108021- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Flood indication bank erosion Palaeohydrology Tree rings 2D modelling Ecology QH540-549.5
spellingShingle	Flood indication bank erosion Palaeohydrology Tree rings 2D modelling Ecology QH540-549.5 Ireneusz Malik Małgorzata Wistuba Damian Absalon Michał Habel Sergey Chalov Ruide Yu Hydrodynamic parameters of floods and related bank erosion events indicated from tree rings and 2D hydrodynamic model for a small ungauged catchment (Sudeten Mts., Poland)
description	Small mountain catchments usually lack hydrological monitoring and gauges. Therefore, in such areas, data on past flood and bank erosion are often missing, which makes assessing flood and erosion hazards very limited. We attempt to fill in this gap by dating individual flood and erosion events from growth disturbances produced by trees after their stems are tilted, and their roots are exposed and wounded by transported material. We aimed to develop a conceptual approach to integrate dendrochronology and 2D modelling for indicating and assessing past events of floods and bank erosion on a small mountain river Łomniczka, Sudeten mountains, Poland. We dated growth disturbances resulting from tilting of stems of spruce trees which grow on eroded riverbanks, i.e. tree-ring eccentricity and compression wood. We also dated disturbances resulting from the exposure of roots from under the soil cover, i.e. sudden decreases of cell lumen, and root injuries by debris transported by floods, i.e. scars and traumatic resin ducts. Dendrochronology allow to indicate the occurrence of 28 floods since the 1930s, including 11 floods when bank erosion was also recorded at study sites. The approach enables to identify rates of bank erosion during specific floods which ranged at study sites from 20 to 120 cm. The largest discharge was determined for the 1997 flood (106,7 m3 s−1), and the highest flow velocities were obtained for the 1930 floods (4.59 m/s). Results show that the highest shear stress occurred during the floods in 1943 and 1977 (510,3N/m2) and in 1997 flood (469.1 N/m2). We conclude that dendrochronology combined with 2D modelling allowed us to indicate past floods and bank erosion, and to prepare reliable inventories for analyses of flood and erosion hazard. The approach proposed in this paper can also be used as a tool for flood management, spatial management and planning.
format	article
author	Ireneusz Malik Małgorzata Wistuba Damian Absalon Michał Habel Sergey Chalov Ruide Yu
author_facet	Ireneusz Malik Małgorzata Wistuba Damian Absalon Michał Habel Sergey Chalov Ruide Yu
author_sort	Ireneusz Malik
title	Hydrodynamic parameters of floods and related bank erosion events indicated from tree rings and 2D hydrodynamic model for a small ungauged catchment (Sudeten Mts., Poland)
title_short	Hydrodynamic parameters of floods and related bank erosion events indicated from tree rings and 2D hydrodynamic model for a small ungauged catchment (Sudeten Mts., Poland)
title_full	Hydrodynamic parameters of floods and related bank erosion events indicated from tree rings and 2D hydrodynamic model for a small ungauged catchment (Sudeten Mts., Poland)
title_fullStr	Hydrodynamic parameters of floods and related bank erosion events indicated from tree rings and 2D hydrodynamic model for a small ungauged catchment (Sudeten Mts., Poland)
title_full_unstemmed	Hydrodynamic parameters of floods and related bank erosion events indicated from tree rings and 2D hydrodynamic model for a small ungauged catchment (Sudeten Mts., Poland)
title_sort	hydrodynamic parameters of floods and related bank erosion events indicated from tree rings and 2d hydrodynamic model for a small ungauged catchment (sudeten mts., poland)
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/bfa40ce860dc4d20bdf9730a8292359a
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Hydrodynamic parameters of floods and related bank erosion events indicated from tree rings and 2D hydrodynamic model for a small ungauged catchment (Sudeten Mts., Poland)

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